MS vs. Amavis

[Julian Field]

At 01:07 26/07/2003, you wrote:
> > -amavis AFAIK calls an instance of your virus scanner for every single
> >  message whereas MS gathers mail up into batches and invokes the virus
> >  scanner for each batch.
>
>This is not entirely accurate.  Amavisd-new does support several of the
>virus scanner which can run in daemon mode including clam and sophos to
>mention a few.  While MS does a batched process, that could argueably NOT be
>better as there COULD be performance related issues with batched jobs no
>matter how long the timeout is between "checks" of the disk...although it
>DOES appear to handle failures by MailScanner processes well as mail can
>stillbe received, just not delivered. (depending on your MTA)

MailScanner does not wait until there are several messages in the queue
before scanning them. It will always scan whatever is available. On a
normal setup the queue will be checked about once per second. And for large
batches the daemons are on the whole less efficient than using the
command-line scanners, I tested some.

--
Julian Field
www.MailScanner.info
Professional Support Services at www.MailScanner.biz
MailScanner thanks transtec Computers for their support